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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
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0.63ct Multicolor Chocolate Opal, Oval, Opaque

0.63ct Multicolor Chocolate Opal, Oval, Opaque

7.2 x 5.3 mm

$ 18.82

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2.09ct Red Almandine Garnet, Marquise, VVS-VS

2.09ct Red Almandine Garnet, Marquise, VVS-VS

12 x 6 mm (calibrated)

$ 78.06

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1.58ct Purple Spinel, Cushion, VVS-VS

1.58ct Purple Spinel, Cushion, VVS-VS

7.2 x 5.8 mm

$ 103.87

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9.67ct Green Jadeite, Oval, Translucent

9.67ct Green Jadeite, Oval, Translucent

16.4 x 12.6 mm

$ 21.18

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1.54ct Purple Rhodolite Garnet, Oval, VVS-VS

1.54ct Purple Rhodolite Garnet, Oval, VVS-VS

7.5 x 6.1 mm

$ 53.68

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26.01ct Orange Quartz With Marcasite, Pear Shape, Transparent
Quartz With Marcasite Product Video (586520)

26.01ct Orange Quartz With Marcasite, Pear Shape, Transparent

31.5 x 17.9 mm

$ 142.49

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28.38ct Multicolor Labradorite, Pear Shape, Opaque

28.38ct Multicolor Labradorite, Pear Shape, Opaque

21.7 x 20.4 mm

$ 31.09

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4.83ctw Violet Amethyst, Fancy, VS

4.83ctw Violet Amethyst, Fancy, VS

9.1 x 4.4 mm

$ 31.76

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165.68ct Pink Star Rose Quartz, Oval, Transparent
Star Rose Quartz Product Video (500689)

165.68ct Pink Star Rose Quartz, Oval, Transparent

32.9 x 28.3 mm

$ 272.27

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15.22ct Black Tourmaline, Oval, Opaque

15.22ct Black Tourmaline, Oval, Opaque

16.8 x 14.2 mm

$ 75.80

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2.08ctw Orange Moonstone, Pear Shape, Transparent

2.08ctw Orange Moonstone, Pear Shape, Transparent

9 x 6 mm (calibrated)

$ 4.14

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3.36ct White Topaz, Oval, Transparent

3.36ct White Topaz, Oval, Transparent

10 x 8 mm (calibrated)

$ 18.41

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1.34ct Yellow Beryl, Trillion, VVS

1.34ct Yellow Beryl, Trillion, VVS

8.4 x 8 mm

$ 26.69

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18.42ct White Rainbow Moonstone, Fancy, Transparent

18.42ct White Rainbow Moonstone, Fancy, Transparent

24 x 14.1 mm

$ 146.77

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3.25ct Multicolor Labradorite, Baguette, Translucent

3.25ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 4.47

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9.78ct Pink Kunzite, Emerald Cut, VVS-VS
Kunzite Product Video (695116)

9.78ct Pink Kunzite, Emerald Cut, VVS-VS

15 x 8.1 mm

$ 243.52

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1.72ct Multicolor Tourmaline, Fancy, Transparent

1.72ct Multicolor Tourmaline, Fancy, Transparent

12.1 x 7.3 mm

$ 51.60

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19.11ct Brown Tiger'S Eye, Baguette, Opaque

19.11ct Brown Tiger'S Eye, Baguette, Opaque

20 x 15 mm (calibrated)

$ 19.03

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0.83ct Green Peridot, Oval, VVS-VS

0.83ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 5.79

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2.05ct Orange Hessonite Garnet, Cushion, SI

2.05ct Orange Hessonite Garnet, Cushion, SI

7 x 7 mm (calibrated)

$ 34.93

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1.92ct Orange Hessonite Garnet, Cushion, VS-SI

1.92ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 28.60

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3.68ctw Yellow Citrine, Square, VVS-VS

3.68ctw Yellow Citrine, Square, VVS-VS

7 x 7 mm (calibrated)

$ 28.23

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7.22ct Yellow Citrine, Briolette, VVS

7.22ct Yellow Citrine, Briolette, VVS

15.9 x 9 mm

$ 40.74

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3.71ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

3.71ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

13.1 x 10.1 mm

$ 11.09

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate
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